Test Vocabulary Flashcards
a graph using bars to compare quantities; the height or length of each bar represents a designated number
bar graph
the number of times an item occurs
frequency
a visual way to display data
graph
the axis on which the categories or values are shown in a bar and line graph
horizontal axis
the whole numbers and their opposites
integer
a sample data point used to explain the stems and leaves in a stem-and-leaf plot
key
the units digit written to the right of the vertical line in a stem-and-leaf plot
leaves
a graph used to show how a set of data changes over a period of time
line graph
a diagram that shows the frequency of data on a number line
line plot
the sum of the numbers in a set of data divided by the number of pieces of data
mean
the middle number in a set of data when the data are arranged in numerical order; if the data has an even number it is between those two numbers
median
the sum of two or more quantities divided by the number of quantities; the mean
average
the number(s) or item(s) that appear most often in a set of data
mode
a number that is less than zero
negative numbers
numbers that are the same distance from zero in opposite directions
opposites
